import java.util.Deque;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;


public class Test {
    public static void main(String[] args) {

    }
    public static void main6(String[] args) {
        Deque<Integer> deque = new LinkedList<>();//双端队列
        Queue<Integer> queue = new LinkedList<>();//普通队列
        LinkedList<Integer> stack = new LinkedList<>();//链式栈
        List<Integer> list = new LinkedList<>();//双向栈
    }
}
